Finding the Fourth Proportional to 121,398.66, 167,470.61 and 81,122.31
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Solution
The fourth proportional to 121,398.66, 167,470.61 and 81,122.31 is: 111,909.00
Step by Step Solution
- Step 1: Write the proportion equation
121,398.66 : 167,470.61 = 81,122.31 : x - Step 2: Convert to fraction form
121,398.66/167,470.61 = 81,122.31/x - Step 3: Cross multiply
121,398.66x = 167,470.61 × 81,122.31 - Step 4: Simplify right side
121,398.66x = 13,585,602,334.70 - Step 5: Solve for x
x = 13,585,602,334.70/121,398.66 - Step 6: Final answer
x = 111,909.00
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.